Xylem WEDECO SMOevo PLUS Series, Оригинальное руководство

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Manual Ozone Generating System SMOevo
PLUS
System Description
Manual_SMOevoPLUS_eng_01.2019.doc
page 65 of 179
Based on the Ozone Mass calculated in this way, the Gas Flow or the Ozone Concentration
can be defined as setpoint.
Refer to Chapter Control of Required Ozone Mass.
5.5.2.4 Dose Control with Dose Trim Function
This option involves an additional value for optimizing the ozone generation, e. g. measuring
the ozone content in the offgas, measurement of residual ozone in the process water, or
measurement of the Redox potential in the process water.
When falling below or exceeding a certain limit value, the ozone production is reduced or
increased in pre-defined stages in order to ensure a process optimized ozone production.
Refer to Chapter Dose Trim Settings.
dO3 = c
±
sO3
d
O3
: Calculated Dose setpoint (g/m³)
c :
Correction factor (± %)
Correction of the set Dose setpoint. Depending on the ratio setpoint / process
value of the process variables of the Dose Trim, the set Dose setpoint is
increased or reduced.
s
O3
: Set Dose setpoint (g/m³)
The calculation of the Ozone Dose setpoint is carried out downstream the Dose Control, The
Dose Trim function can only be used with the Dose Control mode, not with the Required
Ozone Mass Control.
Refer to Chapter Dose Control.